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The Department of the Army (DA) is one of the three military departments within the Department of Defense of the United States of America. The Department of the Army is the Federal Government agency within which the United States Army is organized, and it is led by the Secretary of the Army who has statutory authority to conduct its affairs and to prescribe regulations for its government, subject to the limits of the law, and the directions of the Secretary of Defense and the President. The Secretary of the Army is a civilian official appointed by the President and confirmed by the Senate. The highest-ranking military officer in the department is the Chief of Staff of the Army, who is also a member of the Joint Chiefs of Staff. Other senior officials of the Department are the Under Secretary of the Army (principal deputy to the Secretary) and the Vice Chief of Staff of the Army (principal deputy to the Chief of Staff.) The ''Department of War'' was originally formed in 1789 as an Executive Department of the United States, and was renamed by the National Security Act of 1947 to the Department of the Army on September 18, 1947. By amendments to the National Security Act of 1947 in 1949, the Department of the Army was transformed to its present-day status. ==Organizational structure== (詳細はUnited States Department of Defense. The Department is headed by the Secretary of the Army, who by statute must be a civilian, appointed by the President with the confirmation by the United States Senate. The Secretary of the Army is responsible for, and has the authority to conduct all the affairs of the Department of the Army, subject to the authority, direction and control of the Secretary of Defense. The Department of the Army is divided between its Headquarters at the Seat of Government and the field organizations of the Army. By direction of the Secretary of Defense, the Secretary of the Army assigns Army forces, apart from those units performing duties enumerated in (i.e. organize, train & equip) or unless otherwise directed, to the operational command of the Commanders of the Combatant Commands. Only the Secretary of Defense (and the President) has the authority to approve transfer of forces to and from Combatant Commands. . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「United States Department of the Army」の詳細全文を読む スポンサード リンク
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